FAYETTEVILLE, Ark. – Walmart Stores Inc. CEO Mike Duke said Friday that the retailer is committed to integrity in the wake of recent bribery allegations in Mexico.

Duke joined Chairman Robson Walton, son of founder Sam Walton, at the company’s annual meeting in pledging that Walmart will get to the bottom of the allegations.

This comes after the world’s largest retailer said in recent weeks that it is overhauling its compliance program and expanding its internal investigation into the accusations to other countries.

“We’ve all heard about the recent allegations about the company,” Duke said to a crowd of about 14,000. “Let me be clear: Walmart is committed to compliance and integrity everywhere we operate. I want to personally assure you, we’re doing everything we can to get to the bottom of this matter.”

The meeting could have been a triumphant moment for the world’s largest retailer, which is celebrating its 50th anniversary and seeing its U.S. results make a comeback. But instead executives spent much of the meeting reassuring shareholders that the company will be able retain its integrity as it continues to expand globally.

A story by The New York Times in April said that the world’s largest retailer allegedly failed to notify law enforcement after finding evidence that officials authorized millions of dollars in bribes in Mexico to get speedier building permits and other favors.

It’s been reported that federal authorities in the U.S. and Mexico are investigating Walmart for potential violations.